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Do you use a regular toothbrush or an electric toothbrush?

I always wanted to use an electric one but still use a regular one.

I wonder how much an electric one costs.

There is this Japanese article explaining an interesting discovery on electric toothbrush.

First, put an electric toothbrush and turn it on!

It starts moving.

It turns around…

…and fully rotated!

By the way, the discoverer said he was extremely bored when he found this “law”.

If you have one, why don’t you try it?? (^_^)

Reference: Daily Portal Z

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